haiku/build/scripts/build_cross_tools
Alexander von Gluck IV c33a98eebc build/scripts/gcc2: Specify -fcommon as the default changed in gcc10
* gcc10 changed to -fno-common default
* Resolves #16520

Change-Id: I9af2234532177f2153159eea94a05a106587ebbb
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3317
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
2020-10-14 15:36:20 +00:00

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#!/bin/sh
# Parameters <haiku sourcedir> <buildtools dir> <install dir>
# Influential environmental variable:
# * haikuRequiredLegacyGCCVersion: The required version of the gcc. Will be
# checked against the version in the buildtools directory.
# get and check the parameters
if [ $# -lt 3 ]; then
echo Usage: $0 '<haiku sourcedir> <buildtools dir> <install dir>' \
'[extra make flags]' >&2
exit 1
fi
set -e
if [ -z "$MAKE" ]; then
echo "MAKE undefined. Assuming make."
export MAKE=make
fi
haikuSourceDir=$1
buildToolsDir=$2/legacy
installDir=$3
shift 3
additionalMakeArgs=$*
# Note: The gcc 2 build has trouble with -jN N > 1, hence we only use the
# additional flags for the binutils build. Should there ever be any other
# flags than -jN, we need to handle this differently.
if [ `uname -s` = 'Haiku' ]; then
# force cross-build if building on Haiku:
buildhostMachine=i586-pc-haiku_buildhost
buildHostSpec="--build=$buildhostMachine --host=$buildhostMachine"
fi
if [ ! -d $haikuSourceDir ]; then
echo "ERROR: No such directory: \"$haikuSourceDir\"" >&2
exit 1
fi
if [ ! -d $buildToolsDir ]; then
echo "ERROR: No such directory: \"$buildToolsDir\"" >&2
exit 1
fi
# verify or extract the gcc version
gccVersionDotC="$buildToolsDir/gcc/gcc/version.c"
if [ -n "$haikuRequiredLegacyGCCVersion" ]; then
# haikuRequiredLegacyGCCVersion has been specified. Check whether the
# version of the gcc in the given build tools directory matches.
if ! grep "$haikuRequiredLegacyGCCVersion" \
"$gccVersionDotC" >/dev/null 2>&1 ; then
echo "*** Mismatching compiler versions between configure script and" \
>&2
echo "*** $gccVersionDotC" >&2
echo "*** Did you perhaps update only one of haiku & buildtools?" >&2
exit 1
fi
else
# haikuRequiredLegacyGCCVersion wasn't specified. Extract the version string
# from the gcc's version.c.
haikuRequiredLegacyGCCVersion=`grep "2.95.3-haiku-" "$gccVersionDotC" \
| sed 's@.*\"\(.*\)\".*@\1@'`
if [ -z "$haikuRequiredLegacyGCCVersion" ]; then
echo "ERROR: Failed to extract version string from $gccVersionDotC" >&2
exit 1
fi
fi
# create the output dir
mkdir -p $installDir || exit 1
# get absolute paths
currentDir=`pwd`
cd $haikuSourceDir
haikuSourceDir=`pwd`
cd $currentDir
cd $buildToolsDir
buildToolsDir=`pwd`
cd $currentDir
cd $installDir
installDir=`pwd`
cd $currentDir
# create the object and installation directories for the cross compilation tools
objDir=${installDir}-build
binutilsObjDir=$objDir/binutils
gccObjDir=$objDir/gcc
tmpIncludeDir=$objDir/sysincludes
tmpLibDir=$objDir/syslibs
rm -rf $installDir $objDir
mkdir -p $installDir $objDir $binutilsObjDir $gccObjDir $tmpIncludeDir \
$tmpLibDir || exit 1
mkdir -p $installDir/lib/gcc-lib/i586-pc-haiku/$haikuRequiredLegacyGCCVersion
gccConfigureArgs=
if [ -n "$SECONDARY_ARCH" ]; then
gccConfigureArgs="$gccConfigureArgs --with-hybrid-secondary=$SECONDARY_ARCH"
fi
# force the POSIX locale, as the build (makeinfo) might choke otherwise
export LC_ALL=POSIX
# drop an multiple job arguments from MAKEFLAGS
if [ ! -z "$MAKEFLAGS" ]; then
export MAKEFLAGS=$(echo $MAKEFLAGS | sed -e 's/-j\s*[0-9][0-9]*//g')
fi
# build binutils
cd $binutilsObjDir
CFLAGS="-O2 -fcommon" CXXFLAGS="-O2 -fcommon" $buildToolsDir/binutils/configure \
--prefix=$installDir $buildHostSpec --target=i586-pc-haiku \
--disable-nls --enable-shared=yes --disable-werror || exit 1
$MAKE $additionalMakeArgs || exit 1
$MAKE $additionalMakeArgs install || exit 1
PATH=$PATH:$installDir/bin
export PATH
# build gcc
# prepare the include files
copy_headers()
{
sourceDir=$1
targetDir=$2
headers="`find $sourceDir -name \*\.h`"
headers="`echo $headers | sed -e s@$sourceDir/@@g`"
for f in $headers; do
headerTargetDir=$targetDir/`dirname $f`
mkdir -p $headerTargetDir
cp $sourceDir/$f $headerTargetDir
done
}
copy_headers $haikuSourceDir/headers/config $tmpIncludeDir/config
copy_headers $haikuSourceDir/headers/os $tmpIncludeDir/os
copy_headers $haikuSourceDir/headers/posix $tmpIncludeDir/posix
# Touch some files generated by bison, so that bison won't run to update them.
# Fixes issues with newer bison versions.
# And while at it, touch gperf target, too (as gperf may not be installed)
(cd $buildToolsDir/gcc/gcc; touch c-parse.c c-parse.h cexp.c cp/parse.c \
cp/parse.h c-gperf.h)
# configure gcc
cd $gccObjDir
# GCC 2 compiled for x86_64 on most systems is broken, compile for 32-bit.
export CC="gcc -m32"
CFLAGS="-O2 -U_FORTIFY_SOURCE -fcommon" CXXFLAGS="-O2 -fcommon" $buildToolsDir/gcc/configure \
--prefix=$installDir $buildHostSpec --target=i586-pc-haiku \
--disable-nls --enable-shared=yes --enable-languages=c,c++ \
--with-headers=$tmpIncludeDir --with-libs=$tmpLibDir $gccConfigureArgs \
|| exit 1
unset CC
# hack the Makefile to avoid trouble with stuff we don't need anyway
sedExpr=
for toRemove in libiberty libio libjava libobjc libstdc++; do
sedExpr="$sedExpr -e 's@^\(TARGET_CONFIGDIRS =.*\)$toRemove\(.*\)@\1\2@'"
done
echo sedExpr: $sedExpr
mv Makefile Makefile.bak || exit 1
eval "sed $sedExpr Makefile.bak > Makefile" || exit 1
rm Makefile.bak
# make gcc
$MAKE cross || {
echo "ERROR: Building gcc failed." >&2
exit 1
}
# install gcc
$MAKE install-gcc-cross || {
echo "ERROR: Installing the cross compiler failed." >&2
exit 1
}
# Remove the math.h gcc header. It has been generated by fixincludes
# (unconditional hack: math_huge_val_ifndef) from ours and it is semantically
# equivalent.
rm -f $installDir/lib/gcc-lib/i586-pc-haiku/$haikuRequiredLegacyGCCVersion/include/math.h
# Symlink the built-in C++ headers path to the sys-include directory. This is
# not actually needed for cross compiling Haiku itself, but simplifies using the
# cross compiler for building the bootstrap packages.
(cd $installDir/include; ln -s ../i586-pc-haiku/sys-include/c++/2.95.3 g++)
# cleanup
# remove the system headers from the installation dir
# Only the ones from the source tree should be used.
rm -rf $installDir/i586-pc-haiku/sys-include
# remove the objects dir
rm -rf $objDir
echo "binutils and gcc for cross compilation have been built successfully!"